This build has undergone some other changes to the theme and the OOBE routine.
It is now no longer gray, but the final Vista look, light blue like.

After the completing the OOBE, the Windows Experience Index now runs, while you wait until it completes it will show you some things you can do with your new computer.
The applications stayed the same, just Media Center got another update the UI and first run wizard.
In the Control Panel you will find Windows CardSpace instead of Digital Identities and has undergone some UI Changes.